ZX12-5807
Expert Class
Posts: 137
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posted February 13, 2009 04:30 PM
Fuel Injection Instant Rich?
Is there a way to lock the fuel injection to full rich to use with a dry nitrous system like the MPS Fast FI box does?
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2001 ZX12 1287cc
2001 ZX12 1317cc Lee's head
  
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KZScott
Needs a life
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Posts: 7235
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posted February 13, 2009 05:12 PM
 Edited By: KZScott on 14 Feb 2009 03:00
that is the wrong way to add fuel. it makes the injector duty cycle hold at 100%, you really dont want over 90. if you get a pc3usb and hub you can do the map switch feature when on nitrous to richen the fuel amount.
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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whitehendrix
Zone Head
fails!
Posts: 757
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posted February 13, 2009 09:58 PM
thinin maybe that famous little temp switch mod? scott? whatcha think...
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Duct tape is the handyman's secret
weapon. The black is for formal
occasions. - ZRXDean
ill never own a busa unless
someone gives me one.... and then
ill sell it -KZScott
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KZScott
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Posts: 7235
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posted February 13, 2009 11:38 PM
Edited By: KZScott on 14 Feb 2009 07:39
several ways to do it, but holding the injectors at 100 percent DC is asking for trouble. pc w/map switch, resistor with the coolant temp sensor, or pressurise the fuel pressure regulator with regulated co2. depends on how big you want to go, what pump and injectors are at your disposal ect ect.
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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canadian mike
Novice Class
Posts: 88
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posted February 14, 2009 06:30 AM
that said,you dont like the MPS fast fi box then scott??
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01 zx12
03 TURBO BUSA
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keith
Expert Class
Posts: 155
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posted February 14, 2009 07:30 AM
I've got one of Brad O'Connors boxes on mine - anything ove 80% of full throttle the injectors max out. Been on there five seasons, no problemo. Keith
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ZX12-5807
Expert Class
Posts: 137
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posted February 14, 2009 09:08 AM
I would like to find a way to make the injectors go full rich without having to buy a MPS box or a PCB USB with hub. Basically I want to know what kind of signal the MPS box sends to the injectors to make them go full rich. I do know that if you send to much current to the injectors it will hurt them quick. If I could I would like to lock the injectors in at maybe %95 duty cycle rather than %100 because like KZScott said running them at %100 percent is hard on them.
____________
2001 ZX12 1287cc
2001 ZX12 1317cc Lee's head
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ZX12-5807
Expert Class
Posts: 137
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posted February 14, 2009 09:10 AM
Keith,
Could you give some details on the Brad O'Connor box? I am not familiar with it. Thanks.
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2001 ZX12 1287cc
2001 ZX12 1317cc Lee's head
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keith
Expert Class
Posts: 155
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posted February 14, 2009 09:34 AM
Brad designs and produces his own electronic products through a company called BTC Motronics. His boxes are sold for him by BiggCC Racing over here in Woking, Surrey. I think you'll find all the details on their web site. Quite a lot of people use his nitrous control box over here for small dry kits like 50 shot. I've run mine with a 70 shot by increasing the fuel pressure from 43 to 60 psi so the stock injectors pass an extra 15% fuel when they're on. I had the stock injectors cleaned and then flow checked at the two fuel pressures to see the difference. However so far have been quickest on the 50 shot (9.08/157) but haven't had the track time to sort out the extra gas. Cheers, Keith
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ZX12-5807
Expert Class
Posts: 137
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posted February 14, 2009 01:05 PM
Thanks for the info keith. How did you raise your fuel pressure to 60 psi.?
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2001 ZX12 1287cc
2001 ZX12 1317cc Lee's head
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 14, 2009 03:52 PM
quote:
that said,you dont like the MPS fast fi box then scott??
nope
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
KZScott
Needs a life
high on speed
Posts: 7235
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posted February 14, 2009 03:58 PM
with the map switch feature you could see what number in the pc map got as high as 95% DC(on a dyno or with the correct logger). switch to that map while spraying. adjust the nitrous to get your proper afr.
add the amount of fuel you want to make power with, then tune afr with nitrous. fuel makes power not nitrous
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
keith
Expert Class
Posts: 155
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posted February 15, 2009 09:52 AM
I fitted an adjustable fuel regulator after taking the stock one off the fuel rail and drilling out the inside so I had something to collect the hose to still. This is the hose that returns the unused fuel back to the tank, I put the adjustable fuel regulator in this hose line. One thing about Brad's box on the 12R, it is not gear selective, works on all gears so you can't select gas to come in in second gear for instance. Hope this is a clear descrition of the installation. Keith
PS - I've also modified my clutch to hydraulic using a ZZR1100 handlebar master cylinder and home made slave cylinder fitted in the clutch cover - got fed up with breaking pullers and operating rod ends with my lockup.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 15, 2009 02:52 PM
you should talk to Nox Keith. i havent had an issue with my lock up. one full season on it, no broken parts
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
keith
Expert Class
Posts: 155
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posted February 16, 2009 02:18 AM
I'm doing better than you Scott, my hydraulic conversion has been on there for four seasons, no problemo! Ha Ha.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted February 16, 2009 05:54 PM
i didnt need to redesign it stronger to avoid problems though 
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
keith
Expert Class
Posts: 155
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posted February 17, 2009 01:42 AM
Touche
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